Google Duo - High Quality Video Calls

The distinct advantage of Google Duo is that it uses the front-facing camera for calls and nothing else. Contacts for video calls are taken from the user's address book only.

Google Duo works via a mobile data connection or Wi-Fi. The program only works from a phone with a tethered sim card/mobile number.

Google Duo has a Knock, Knock feature that allows the person being contacted to see who is calling before accepting the call. The program also has number blocking.

What is Knock Knock?

Google Duo is considered an intuitive and simple video calling application that works only on mobile devices. Duo is different from other similar programs because it is designed only for smartphones and tablets. This feature allowed Duo to become a specialized program, and the central part was the 'Knock Knock' option.

The essence of how 'Knock Knock' works are as follows: the user receives a call from a contact on their list, after which this option engages the caller's camera before you answer the call. That is, a warning appears before you answer.

Stable communication process

Google Duo is straightforward to use. The program's interface is focused on quickly finding contacts and making video chats with them.

The image and sound of the video call depending on the coverage area. In times of weak coverage, the sound will still be transmitted flawlessly.

Conclusions

Google Duo is a powerful product for video calling. The only task of the application is to perform quality video chatting. It's no secret that Duo does its direct job perfectly.